Her parents divorced in 1994. Her mother, Higuchi, said that she was subjected to repeated efforts to silence her accusations of corruption involving her Husband, President Fujimori, and his close relatives with donations from Japan. In 2001, Higuchi told investigators probing the corruption of the Fujimori years that she had been tortured "five hundred times" by the intelligence services of the Peruvian Army.[4] and told the press that President Fujimori had ordered for her to be killed, to which the president's right hand, Vladimiro Montesinos had refused on the ground of being a devout catholic[5] Her father denied that Higuchi had been tortured. He said the scars on her back and neck were not from torture but from a traditional Japanese herbal treatment called moxibustion. In August 1994, after the divorce of her parents, Keiko was appointed First Lady of Peru. At 19 years of age and still a student.,[6] From April 1994 to November 2000, she assumed the administration of Fundación por los Niños del Perú (Foundation for the Children of Peru)[citation needed], and created Fundación Peruana Cardioinfantil (Peruvian Foundation for Infant Cardiology)[citation needed], which she presided from 1996 to 2006[citation needed], and dedicated her activities to help low-income families nationwide[clarification needed]. She summoned the Peruvian business community to contribute to her social projects[clarification needed].

Keiko Fujimori participated in several international assemblies, such as the Summit of Spouses of Heads of States and Government of the Americas in Canada and Chile, and the Cumbre Regional para la Infancia (Regional Summit for Infancy) in Colombia[citation needed].

[7] Keiko stayed in Peru until 2004 when she pursued an MBA at Columbia Business School.[8] In 2004, Fujimori married Mark Villanella, a United States citizen who also acquired Peruvian citizenship in 2009[citation needed]. In 2005, Keiko interrupted her studies and returned to Peru after an extradition process was initiated on her father. She became the leader of the Fujimorista Political Group and announced her father's candidacy in the April 2006 Peruvian presidential election, though he was forbidden to participate in any political activity until 2011 under a congressional ban.[9] In April 2006, while her father was detained in neighboring Chile, Fujimori was elected to the Peruvian Congress with more votes than any winning candidate.[10] She served as a Member of the National Congress from 28 July 2006 – 28 July 2011 for Lima.

As a congresswoman and leader of her political party, Fujimori defended the reforms executed by her father during the 1990s. She has led the opposition to the government of Alan García. She authored a law that restricts penitentiary benefits for those who commit serious offenses, and another law that obligates judges to give the highest sanctions to repeat offenders. Similarly, she passed a law that reduces the jail benefits to those who are protected under the "sincere confession"[clarification needed] provision. Along with the Fujimorista Congress members, she worked on a project law in which the death penalty would also be applicable to some of the most severe crimes.[11]

During 2009, Keiko Fujimori began the collection of signatures in order to create her own political party, Fuerza 2011. In March 2010, the National Jury of Elections formally recognized the political party after more than one million signatures were collected, a number that surpassed the requirement by 854,000 signatures. Opinion polls granted her high possibilities to win the presidential elections in 2011;[12] she was leading in presidential election polls as of July 2010.[10]

She is the daughter of former President Alberto Fujimori who is in jail for crimes against humanity. Most recently, accusations have surfaced of connections between drug trafficking and Congressman Joaquín Ramírez, Secretary General of Fuerza Popular, the political party under which Keiko Fujimori is running for president. On Sunday May 15, 2016, Peruvian news program Cuarto Poder broadcast a report conducted with Univisión that revealed Ramírez is being investigated by the DEA. The Congressman is being investigated for money laundering, a crime for which he is also under investigation in Peru Fujimori is running for president in the middle of a controversial election. Two opponents were withdrawn from the electoral race prior to first round voting: one, and also her main rival, was disqualified over a technical error in the registration of his candidacy; the second opponent broke a new electoral law against vote-buying by handing out money to voters.[14] Fujimori was accused of breaking the law mentioned, but was acquitted according to the statement issued from JEE: “The candidate has not engaged in the prohibited activities of offering or giving money or gifts in the aim of obtaining votes.”[15]

Distancing herself from the controversial shadow of her father, she vowed to not follow his path, that she would provide reparations to women who were allegedly sterilized under her father and that she would not pardon him for his crimes, signing a document during a debate symbolizing her promise.[16][17] She also stated that she would not run for another election if she won the presidency.[17]

Polls indicate that she placed first in the first round of voting on April 10, garnering approximately 40% of the vote over opponents Pedro Pablo Kuczynski and Verónika Mendoza who each received approximately 20%.[18] In a very contested election, according to exit polls Fujimori trailed Pedro Pablo Kuczynski as ballots were counted late into the evening on June 5, 2016.

Media reports indicated that key secretary-general of Fujimori, Joaquin Ramirez, is under investigation by the U.S. Drug Enforcement Administration for money laundering.[21]

As of May 2016, reports assert that the MBA title and master thesis records are nonexistent in official data of SUNEDU, chief supervising unit for academic degrees in Peru, and Columbia University.[22]